Why do your teachers bother explaining anything to you? It is not as if you are going to be able to comprehend run-on sentences, appositives and other punctuation rules, the fact that it is spelled "it's" when it is a contraction and not possessive, and any of the other terribe grammatical errors found in this one sentence of your post. Cripes, I bet their red Sharpies run dry when grading your papers.

On a lighter note, thank you so much for imparting on all forum readers your infinite wrestling wisdom. We would all be completely lost without you. Seig heil, Nigel!!

Post Script: You shouldn't start a sentence with the word "but." It kind of makes you look like a dummy.